Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1975-05-30
1977-05-17
Hix, L. T.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
96 1LY, 118DIG23, 427 15, G03G 1510
Patent
active
040238989
ABSTRACT:
This apparatus is disclosed for developing electrostatic latent images, comprising a developer supply unit having a first liquid repellent layer with a thickness in the range of 3 - 400.mu.(preferably 5 - 330.mu.). The first layer is disposed on a surface of a substrate, having a plurality of closely spaced pores distributed uniformly over the entire surface of the substrate and penetrating to the back surface thereof. A liquid developer is supplied to a first or back surface of this unit. A photoconductive sensitive plate is spaced closely to a front or second surface of the developer supply unit, to attract the developer to exude through the pores from the first surface of the said liquid repellent layer. More specifically, an electrostatic voltage is applied between the developer supply unit and the photoconductive sensitive plate to provide an electrostatic latent image preformed of electrostatic charges. Alternatively, a latent image could be formed by exposing the plate to light images or by the effect of pre-exposed light images on the said photoconductive sensitive plate.
REFERENCES:
patent: 3096198 (1963-07-01), Schaffert
patent: 3472676 (1969-10-01), Cassiers et al.
patent: 3486922 (1969-12-01), Cassiers et al.
patent: 3669073 (1972-06-01), Savit et al.
patent: 3817748 (1974-06-01), Whittaker
Inoue Eiichi
Ohno Genji
Hix L. T,.
LaBarre J. A.
Research and Development Laboratories of Ohno Co., Ltd.
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